Filing machine



Aug. 11, 1953 L.. J. TANSEY` ET AL FILING MACHINE Filed Oct. 18, 1947 Patented Aug. 11, 1953 FILING MACHINE Lawrence J'. Tansey, Detroit, and John B. Hoy,

Ferndale, Mich., assignors, by mesne assignments, to Mechanical Finishing Co., a corporation of Michigan Application October 18, 1947, Serial No. 780,632

8 Claims.

This invention relates to iiling devices, and more particularly to a device attachable to an airoperated motor which reciprocates the le at high speed.

The pneumatically operated motor embodies a cylinder having a pair of pistons therein suitably connected through the valve means to an air supply conduit for reciprocating a pair of plates toward and away from each other. A block of metal is attached to each of the plates, the one having means for supporting the file and the other being of a Weight substantially equal to the le and its supporting block so as to have each plate of the motor operate equal weights of material.

The le supporting device embodies a rod having means at each of its ends for supporting a clamping bracket which engages slots in the end of the le for supporting it on the device while retaining it against lateral displacement. This may be accomplished by shaping the slots in the form of an arc which may be convex or concave and employing clamping brackets provided with a flange of arcuate shape which mates with the arc of the slots when disposed therein for preventing lateral displacement.

In another form of the invention, the sides of the clamping bracket may extend inwardly to project over the side edges of the file ends to prevent lateral displacement. In still another form of the invention, angular slots may be provided at the corners of the le and the bracket formed to project into the corner slots and thereby prevent lateral displacement.

Accordingly, the main objects of the invention are: to provide a filing attachment for an air motor embodying parts which reciprocate toward and away from each other which are of equal weights; to provide a ling device having a fluid motor with driven plates in reciprocation toward and away from each other, to one of which plates the le is supported and on the other of which an element is secured of equal weight to the movable file assembly; to provide a filing device embodying a block secured to one reciprocating plate of a iiuid motor having a rod extending therethrough containing ile supporting brackets at each of its ends, with the rod extending through an aperture in a second block which is supported on a second reciprocating plate of the motor and which is of a weight equal to the first block and movable le assembly; and, in general, to provide a filing attachment for a fluid motor which is simple in construction, positive of operation and economical of manufacture.

Other objects and features of novelty of the invention will be specifically pointed out or will become apparent when referring, for a better understanding of the invention, to the following description, taken in conjunction with the accompanying drawing, wherein:

Figure 1 is a sectional View of a fluid motor having a ling device attached thereto which embodies features of thisinvention;

Fig. 2 is an enlarged sectional view of one end of the device illustrated in Fig. l, taken on the line 2-2 thereof;

Fig. 3 is a broken sectional view of a portion of the device illustrated in Fig. 2, showing a modified form thereof;

Fig. 4 is a sectional view of the structure illustrated in Fig. 3, taken on the line 4--4 thereof; Fig. 5 is a view of structure, similarto that illustrated in Fig. 3, showing a further form which the invention may assume, and

Fig. 6 is a sectional view of the structure illustrated in Fig. 5, taken on the line 6 6 thereof.

In the figures, the fluid operated motor Ill may be of any construction so long as it provides reciprocating movement to a pair of work plates II and I2 toward and away from each other. The device herein illustrated is described in United States Patents 1,524,902, 1,590,353 and 1,677,112 and is therefore not shown herein in detail. 'Ihe fluid motor herein illustrated comprises a housing I3 containing a cylinder I4 in which a pair of pistons I5 and I6 is mounted to reciprocate toward and away from each other. Air is introduced through a line I'I to an end cap I8 of the housing I3 through a valve I9 to a passageway 2I leading into a valve chamber 22. The valve I9 is unseated by a rod 23 actuated by a palm lever 24 on the top of the motor.

A valve 25 in the chamber 22 is actuated by a rod 26 carried by a plate 21 which is oscillated by pins 28 extending from plates 29 and 3U secured to the work plates II and I2. The plates II and I2 are connected by shafts 3| to the respective pistons I5 and IE, and as the pistons reciprocate toward and from each other, the work plates II and I2 also move toward and from each other. This movement reciprocates the rod 2S to operate the valve 25 for introducing the air on opposite sides of the piston to produce the reciprocating movement thereof and the exhausting of the air through the passageway 32.

Ahead of thesupply line I'I, and not herein illustrated, a moisture trap is preferably provided, the air from which passes through a pressure regulator and through an automatic air lubricator for lubricating the cylinder, pistons and other working parts of the iiuid motor. Some of this also clamps the block 33 and engages a bracket 38 which is clamped on the rod by a nut 39 which is tightened against a reinforcing plate 4I; The right-hand end of the rod 35.has a similar bracketl 42 secured in position by a-pairof nuts Mland.v

44 which are tightened against the bracket `anda reinforcing plate 45. A le 4G is supported by the brackets 38 and 45 for reciprocation with the block and the work plate I I.

The work plate I2 has a block 41 secured thereto by screws 48 and is provided with an aperture 49 through which the rod 35.extends. The block 41 has a pair of sleevel bearings 5I -at each end, with an oil Wick 52 disposed therebetween and about the rod. An O-ring 53seals the ends of the block to the rod 35 :when squeezed bypacking nuts 54 threaded in the opposite ends of the aperture 4S. An oil passageway 55 extends from the top surface of the block 41 into the aperture 49, the upper end being chamfered at 56 to forman enlargedcpening for receiving-the lubricant which may drain from the exhaust passageway 32, as mentioned hereinabove. rlhe block 41 is made of brass Vor other heavy material so that its weight will equal the weight of the block 33, the rod .35, the supporting brackets 38 and 42 and the file 45. The weight of the elements supported by the plates II and VI2 being equal, any vibrations which otherwise might be set up in the device during operation are eliminated.

Referring to Figs. 1 and 2, the brackets 38 and 42 have a projecting flange 51 provided with an arcuate end portion 58 which engages the arcuate ,edge 59 of a slot 6I provided in both ends of the le'interjacent the top and bottom surfaces. The brackets are drawn towardv each other to force the lilanges 51 'into the slots 6I in the le with the arcuate surfaces in engagement so that the file willbe secured in position against movement laterally from the brackets. By having the slot placed midway between the top and bottom surfaces, after one side of the le becomes dull, it is only necessary to adjust one bracket to're- Verse .the file and present the other Working `face thereof for further operations.

Referring to Figs. 3 and 4, a further form 'of the invention is illustrated, that wherein brackets 62 are provided in place of the brackets` 38and 42, having an inwardly projecting lip 63and`side anges 64. The le has a slot 65 across the end in which the lip 63projects for holding thele while-the ilanges 64 4prevent it from shifting laterally of the device.

In Fig. a further form of bracket 56 is illustrated. that having projecting ears 61 which project in slots 68 provided at each corner `of the file.`

The ears 61 support the file and prevent it from being shifted lateraliy.

In operating the device, the air pressure is regulated to produce the reciprocation of the pistons and file at a speed conforming to the amount of Ypressure the operator is to apply to the device. The device is controlled by the operator through the manipulation of the palm lever 24, and when in full operation the iile reciprocates at a rateof three thousand to four thousand times `a minute.

Each reciprocation is opposed by the reciprocation of the block 41 which moves in the opposite direction to the le. The reciprocating parts being of the same weight, the vibrations which would otherwise be set up are eliminated.

What is claimed is:

1. A filing machine including a motor having two oppositely reciprocating work plates, a block secured to each of said plates, a =rod attached to and supported rigidly by one block and slidably extending thorugh an aperture in the other block, brackets supported on the ends of the rod for relativ'e 'adjustament toward and away from each other, vand anle supported by the brackets, the Weight `of the block through which the rod extends being substantially equal to the weight of the other block, the-brackets and the file.

2. A yiiling vmachine including a motor having two oppositely reciprocating work plates, a block securedI to each of said plates, a rod attached to and supported by one block and slidably extending through an aperture inthe other block, brackets supported on the endsor the rod for relative adjustment toward and away from each other, and a le supported by the brackets, the weight of the block through which the-rod extends being substantially equal to the weight of the other block, the brackets and the nle,the ends of the nle being provided with a slot interjacentvthe top and bottom ling surfaces and the brackets having projections extending into the slots and providing engagement therewith in a manner to prevent relative lateral movement between the brackets and the le.

3. In a device attachable-to a motor having reciprocating plates, a pair of blocks securedwto said plates, a rod secured in fixedrelation to one block and slidably extending through an aperture in the other block, and brackets adjustably secured on the ends of the rod vfoi-movement `toward and away from each other and having aligned flanges projecting toward each other for supporting a file.

4. In a device attachable to a motor having reciprocating plates, a pair of Ablocks secured to said plates, a rod secured -in-ixed relation to one block and slidably extending through an aperture in the other block, brackets adjustably secured on the ends of the rod formovement toward and away from each other and having aligned anges projecting toward each other for supporting a file, and -a file having slots at each end midway between the top andbottom surfaces into which the flanges of the brackets extend.

5. In a device attachable to a motor having reciprocating plates, a pair of blocks secured to said plates, a rod secured in xedrelation to one block and slidably extending through an aperture in the other block, brackets -adjustably secured on the ends of the rod for movement toward and away from each other and having aligned flangesA projecting toward each other for-supporting a file, and a file having slots at `each end vmidway between the top and bottom surfaces into which the anges of the brackets extend, the slots in the le and the flange on the brackets being matable in such manner as to prevent the lateral displacementof the le relative'to the brackets.

6. In a ltool, a motor, two work plates driven by said motor for producing counter-reciprocating movement, a reciprocable'block driven by one plate, a rod rigidly secured to andextending `from said block, means on said rod `for supporting 4a.

Work producing element, and al second reciprocable block driven lby said other plate having an aperture through which said rod extends for reciprocation in a direction opposite to said second block.

7. In a le attachment for a motor having two Work plates for producing counter-reciprocating movement, a reciprocable block driven by one plate, a rod extending from said block, means on said rod for supporting the le, a second reciprocable block driven by said other plate and having an aperture through which said rod extends, a bearing provided on each end of said second block in engagement with said rod, and a wick disposed about said rod between said bearings, said second block having a passageway for a lubricant extending into the aperture at the portion containing said wick.

8. In a file attachment for a motor having two work plates for producing counter-reciprocating movement, a reciprocable block driven by one plate, a rod extending from said block, means on saidrod for supporting the le, a second reciprocable block driven by said other plate and having an aperture through which said rod extends, a bearing provided on each end of said second block in engagement with said rod, a wick disposed about said rod between said bearings, said second block having a passageway for a lubricant extending into the aperture at the portion containing said wick, sealing elements adjacent to said bearings, and threaded sleeves on the ends of the aperture of said second block for applying pressure to said sealing elements.

LAWRENCE J. TANSEY. JOHN B. HOY.

References Cited in the le of this patent UNITED STATES PATENTS Number 5 310,096 349,490 426,320 1,524,902

Number Name Date Tower Dec. 30, 1884 Gallagher Sept. 211, 1886 Powell Apr. 22, 1890 Anderson Feb. 3, 1925 Ekstrom June 29, 1926 Anderson July 10, 1928 Thompson Jan. 22, 1929 `Schwabe Aug. 11, 1931 Sheppy May 3, 1932 Modglin Aug. 23, 1932 Bauch Dec. 28, 1937 Drefahl May 12, 1942 Thrailkill Aug. 1, 1944 Linden Nov. 14, 1944 Johnson Nov. 30, 1948 Cole Jan. 3, 1950 Perron et al. Apr. 4, 1950 FOREIGN PATENTS Country Date Germany July 25, 1903 Great Britain Mar. 16, 1933 Germany Nov. 28, 1932 Great Britain Nov. 11, 1948 

